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W. W. LYMAN.

Manufacture of Tea and Coffee Pots.

No. 69,922 Patented 0m. .15, 1867.

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WILLIAM w. LYMAN, OF ,WESTMERIDEN, CONNECTICUT, ASSIGNOR TO THE- MERIDEN BRITANNIA'GOMPA'NY, or SAME PLACE.

Lam-8 Patent No'. esteemed 0mm 15, 1867.

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'TO. ALL WHOM IT MAY CONCERN:

Be it known that I, WILLIAMW. LYMAN, of West Meriden, county of New Haven, and State of Connecticut have invented certain new and useful improvcments'in the Manu facture of Tea and Goifee-Pots; and to enable others skilled in the alt to make and use, I will proceed to describe the same by referring to the drawing, in which the same letters indicate like partsin each of the figures.

The nature of this improvement consists in looking a hard metal bottom, such as copper &c., to the body of a Britannia tea or coffee-pot. v I

The invention consists further in looking the edge of a hardv metal bottom on to the lower edge of a Britannia body of a tea or coffee-pot. i r

The invention consists further in locking the lower edge of a Britannia body on to the edge of ahard metal bottom of a tea or coffee-pot. In the accompanying drawings Figures 1 and 2 are vertical section views of the bottom and base of a tea or cofiee-pot.

a is the base, a is the bottom. The base a is made of soft metal, commonly called Britannia. The bottom a' is made of hard metal, as copper, 85c. In fig. 1, the lower edge of the base a is turned or locked over the edge of the bottom.. In fig. 2,.th e outer edge of the bottom is turned or locked over the lower edge of the base.

The process by which this improvement is effected will be understood from the following: A block or chuck is fitted to a spindle, (as the spindle of a'lathe.) The lower part of the body of the pot is fitted thereto, and

the bottom a is placed in its proper position against the lower edge of the body,- and held in that position by a back pressure or centre pressurer Thus the-edge of the bottom, or the edge of the body is spun or turned down firmly, -one upon the other, by the (spinning process) use of pressure of a proper tool, as a planishcr or V ,knurling-tool, or what are commonly called spinning-tools; or, in other words, one part is spun down upon the other by the spinning process, thus producing a perfect joint, giving thereto a finishedsy-mmetrical appearance. A very important advantage is derived from this mode or process of uniting the body and bottom of a pot. There is less liability of melting the 'body in the process of soldering, the soldering can be" prosecuted with greater rapidity, and with less liability of meltingthe Britannia body and it is. also believed that a good joint can be produced without soldering. They may therefore be united with or without solder. I Thus a cheaper, better, and more desirableartiele is produced thereby.

I believe I have thus shown the nature, construction, or process by which this improvement is effected, so as to onableothers skilled to practisethe same." i I l What I claim, therefore, and desire to secure by .Letters Iatcnt, is- Uniting a hard metal bottom .with a soft metal or Britannia body of a tea or coffee-pot, substantially as described.

I claim a tea or coffee-pot, substantially as described.

I WM. W. LYMAN. [In s.]

Witnesses Armin SToNn, J. W. BLIss. 

